An isotope-ratio-monitoring gas chromatography-mass spectrometry apparatus and method are disclosed which provide for on-line analysis of isotope compositions with high precision. With the apparatus and method, samples are introduced in a hydrogen carrier gas into a gas chromatograph and resolved in ...

An isotope-ratio-monitoring gas chromatography-mass spectrometry apparatus (100) and method are disclosed which provide for on-line analysis of isotope compositions with high precision. With the apparatus and method, samples are introduced in a hydrogen carrier gas into a gas chromatograph (1) and r ...